/*****************************************************************************
 *
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2021 Artem Pavlenko
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/

#ifndef GRID_RENDERER_HPP
#define GRID_RENDERER_HPP

// mapnik
#include <mapnik/config.hpp>
#include <mapnik/feature_style_processor.hpp>
#include <mapnik/grid/grid.hpp>
#include <mapnik/util/noncopyable.hpp>
#include <mapnik/rule.hpp>              // for rule, symbolizers
#include <mapnik/geometry/box2d.hpp>    // for box2d
#include <mapnik/color.hpp>             // for color
#include <mapnik/view_transform.hpp>    // for view_transform
#include <mapnik/image_compositing.hpp> // for composite_mode_e
#include <mapnik/pixel_position.hpp>
#include <mapnik/renderer_common.hpp>

// stl
#include <memory>

// fwd declaration to avoid depedence on agg headers
namespace agg {
struct trans_affine;
}

// fwd declarations to speed up compile
namespace mapnik {
class Map;
class feature_impl;
class feature_type_style;
class label_collision_detector4;
class layer;
struct marker;
class proj_transform;
struct grid_rasterizer;
class request;
} // namespace mapnik

namespace mapnik {

template<typename T>
class MAPNIK_DECL grid_renderer : public feature_style_processor<grid_renderer<T>>,
                                  private util::noncopyable
{
  public:
    using buffer_type = T;
    using processor_impl_type = grid_renderer<T>;
    grid_renderer(Map const& m, T& pixmap, double scale_factor = 1.0, unsigned offset_x = 0, unsigned offset_y = 0);
    grid_renderer(Map const& m,
                  request const& req,
                  attributes const& vars,
                  T& pixmap,
                  double scale_factor = 1.0,
                  unsigned offset_x = 0,
                  unsigned offset_y = 0);
    ~grid_renderer();
    void start_map_processing(Map const& map);
    void end_map_processing(Map const& map);
    void start_layer_processing(layer const& lay, box2d<double> const& query_extent);
    void end_layer_processing(layer const& lay);
    void start_style_processing(feature_type_style const& /*st*/) {}
    void end_style_processing(feature_type_style const& /*st*/) {}
    void render_marker(mapnik::feature_impl const& feature,
                       pixel_position const& pos,
                       marker const& marker,
                       agg::trans_affine const& tr,
                       double opacity,
                       composite_mode_e comp_op);

    void process(point_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(line_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(line_pattern_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(polygon_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(polygon_pattern_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(raster_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(shield_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(text_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(building_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(markers_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    void process(group_symbolizer const& sym, mapnik::feature_impl& feature, proj_transform const& prj_trans);
    inline bool
      process(rule::symbolizers const& /*syms*/, mapnik::feature_impl& /*feature*/, proj_transform const& /*prj_trans*/)
    {
        // grid renderer doesn't support processing of multiple symbolizers.
        return false;
    }

    bool painted() { return pixmap_.painted(); }

    void painted(bool _painted) { pixmap_.painted(_painted); }

    inline eAttributeCollectionPolicy attribute_collection_policy() const { return DEFAULT; }

    inline double scale_factor() const { return common_.scale_factor_; }

    inline attributes const& variables() const { return common_.vars_; }

  private:
    buffer_type& pixmap_;
    const std::unique_ptr<grid_rasterizer> ras_ptr;
    renderer_common common_;
    void setup(Map const& m);
};
} // namespace mapnik

#endif // GRID_RENDERER_HPP
